diff options
| -rw-r--r-- | Documentation/devicetree/bindings/usb/usb3503.txt | 20 | ||||
| -rw-r--r-- | drivers/usb/misc/usb3503.c | 31 |
2 files changed, 46 insertions, 5 deletions
diff --git a/Documentation/devicetree/bindings/usb/usb3503.txt b/Documentation/devicetree/bindings/usb/usb3503.txt new file mode 100644 index 000000000000..6813a715fc7d --- /dev/null +++ b/Documentation/devicetree/bindings/usb/usb3503.txt @@ -0,0 +1,20 @@ +SMSC USB3503 High-Speed Hub Controller + +Required properties: +- compatible: Should be "smsc,usb3503". +- reg: Specifies the i2c slave address, it should be 0x08. +- connect-gpios: Should specify GPIO for connect. +- intn-gpios: Should specify GPIO for interrupt. +- reset-gpios: Should specify GPIO for reset. +- initial-mode: Should specify initial mode. + (1 for HUB mode, 2 for STANDBY mode) + +Examples: + usb3503@08 { + compatible = "smsc,usb3503"; + reg = <0x08>; + connect-gpios = <&gpx3 0 1>; + intn-gpios = <&gpx3 4 1>; + reset-gpios = <&gpx3 5 1>; + initial-mode = <1>; + }; diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c index dc2c993ea189..471218aea7b3 100644 --- a/drivers/usb/misc/usb3503.c +++ b/drivers/usb/misc/usb3503.c @@ -23,6 +23,7 @@ #include <linux/delay.h> #include <linux/slab.h> #include <linux/module.h> +#include <linux/of_gpio.h> #include <linux/platform_device.h> #include <linux/platform_data/usb3503.h> @@ -181,8 +182,10 @@ err_hubmode: static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct usb3503_platform_data *pdata = i2c->dev.platform_data; + struct device_node *np = i2c->dev.of_node; struct usb3503 *hub; int err = -ENOMEM; + u32 mode; hub = kzalloc(sizeof(struct usb3503), GFP_KERNEL); if (!hub) { @@ -193,14 +196,23 @@ static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) i2c_set_clientdata(i2c, hub); hub->client = i2c; - if (!pdata) { - dev_dbg(&i2c->dev, "missing platform data\n"); - goto err_out; - } else { + if (pdata) { hub->gpio_intn = pdata->gpio_intn; hub->gpio_connect = pdata->gpio_connect; hub->gpio_reset = pdata->gpio_reset; hub->mode = pdata->initial_mode; + } else if (np) { + hub->gpio_intn = of_get_named_gpio(np, "connect-gpios", 0); + if (hub->gpio_intn == -EPROBE_DEFER) + return -EPROBE_DEFER; + hub->gpio_connect = of_get_named_gpio(np, "intn-gpios", 0); + if (hub->gpio_connect == -EPROBE_DEFER) + return -EPROBE_DEFER; + hub->gpio_reset = of_get_named_gpio(np, "reset-gpios", 0); + if (hub->gpio_reset == -EPROBE_DEFER) + return -EPROBE_DEFER; + of_property_read_u32(np, "initial-mode", &mode); + hub->mode = mode; } if (gpio_is_valid(hub->gpio_intn)) { @@ -236,7 +248,7 @@ static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) } } - usb3503_switch_mode(hub, pdata->initial_mode); + usb3503_switch_mode(hub, hub->mode); dev_info(&i2c->dev, "%s: probed on %s mode\n", __func__, (hub->mode == USB3503_MODE_HUB) ? "hub" : "standby"); @@ -277,9 +289,18 @@ static const struct i2c_device_id usb3503_id[] = { }; MODULE_DEVICE_TABLE(i2c, usb3503_id); +#ifdef CONFIG_OF +static const struct of_device_id usb3503_of_match[] = { + { .compatible = "smsc,usb3503", }, + {}, +}; +MODULE_DEVICE_TABLE(of, usb3503_of_match); +#endif + static struct i2c_driver usb3503_driver = { .driver = { .name = USB3503_I2C_NAME, + .of_match_table = of_match_ptr(usb3503_of_match), }, .probe = usb3503_probe, .remove = usb3503_remove, |
